Ergodicity of Quantum Trajectory Detection Records

2007 ◽  
pp. 358-369 ◽  
Author(s):  
J. D. Cresser
Keyword(s):  
Quantum Trajectory

scholarly journals Treating branch cuts in quantum trajectory models for photoelectron holography

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
A. S. Maxwell ◽  
S. V. Popruzhenko ◽  
C. Figueira de Morisson Faria
Keyword(s):  
Quantum Trajectory ◽  
Trajectory Models ◽  
Branch Cuts

Collective effects and trapping states by a quantum-trajectory treatment of micromaser dynamics

1999 ◽  
Vol 60 (2) ◽  
pp. 1582-1589 ◽  
Author(s):  
F. Casagrande ◽  
A. Lulli ◽  
S. Ulzega
Keyword(s):  
Collective Effects ◽  
Quantum Trajectory

scholarly journals The quantum trajectory approach to quantum feedback control of an oscillator revisited

2012 ◽  
Vol 370 (1979) ◽  
pp. 5338-5353 ◽  
Author(s):  
Andrew C. Doherty ◽  
A. Szorkovszky ◽  
G. I. Harris ◽  
W. P. Bowen
Keyword(s):  
Master Equation ◽  
Quantum Trajectory ◽  
Measurement Sensitivity ◽  
Position Measurement ◽  
Stochastic Master Equation ◽  
Trajectory Approach ◽  
Quantum Feedback ◽  
Master Equation Approach ◽  
Rotating Wave ◽  
Parametric Driving

We revisit the stochastic master equation approach to feedback cooling of a quantum mechanical oscillator undergoing position measurement. By introducing a rotating wave approximation for the measurement and bath coupling, we can provide a more intuitive analysis of the achievable cooling in various regimes of measurement sensitivity and temperature. We also discuss explicitly the effect of backaction noise on the characteristics of the optimal feedback. The resulting rotating wave master equation has found application in our recent work on squeezing the oscillator motion using parametric driving and may have wider interest.

Estimation of the Ground State Energy of an Atomic Solid by Employing Quantum Trajectory Dynamics with Friction

2015 ◽  
Vol 11 (7) ◽  
pp. 2891-2899 ◽  
Author(s):  
Bing Gu ◽  
Robert J. Hinde ◽  
Vitaly A. Rassolov ◽  
Sophya Garashchuk
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Quantum Trajectory ◽  
Trajectory Dynamics

THE QUANTUM TRAJECTORY APPROACH TO GEOMETRIC PHASE FOR OPEN SYSTEMS

2005 ◽  
Vol 20 (22) ◽  
pp. 1635-1654 ◽  
Author(s):  
ANGELO CAROLLO
Keyword(s):  
Quantum System ◽  
Open System ◽  
Geometric Phase ◽  
Open Systems ◽  
Quantum Trajectory ◽  
Operational Method ◽  
Markovian Approximation ◽  
Physical Systems ◽  
Quantum Jump ◽  
Trajectory Approach

The quantum jump method for the calculation of geometric phase is reviewed. This is an operational method to associate a geometric phase to the evolution of a quantum system subjected to decoherence in an open system. The method is general and can be applied to many different physical systems, within the Markovian approximation. As examples, two main source of decoherence are considered: dephasing and spontaneous decay. It is shown that the geometric phase is to very large extent insensitive to the former, i.e. it is independent of the number of jumps determined by the dephasing operator.

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